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相关概念视频

High-Level and Low-Level Awareness01:19

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Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
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相关实验视频

Updated: May 11, 2025

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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分离外部和内部的注意力选择.

Kabir Arora1, Surya Gayet1, J Leon Kenemans1

  • 1Helmholtz Institute, Utrecht University, Heidelberglaan 1, 3584CS Utrecht, the Netherlands.

iScience
|April 18, 2025
PubMed
概括
此摘要是机器生成的。

内部注意力像外部注意力一样转移到记忆位置,但不会增强感官处理. 视觉工作记忆利用空间进行组织,而不是通过招募外部注意力机制.

关键词:
认知神经科学是一种认知神经科学.心理学 心理学 心理学

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科学领域:

  • 认知神经科学 认知神经科学
  • 视觉感知 视觉感知 视觉感知
  • 记忆研究 记忆研究

背景情况:

  • 注意力可以被外部指向视觉刺激或内部指向视觉工作记忆 (VWM) 中的项目.
  • 空间注意力被吸引到以前参加的位置,无论是感知刺激还是记住的物品.
  • 关键的区别在于,在记住的物品的位置上,没有感官输入.

研究的目的:

  • 为了调查是否内部注意力,指向VWM,调节感官处理.
  • 为了比较外部 (感知) 与内部 (记忆) 刺激的注意力选择期间的感觉处理.
  • 为了确定VWM是否使用与外部注意力相同的感官调制机制.

主要方法:

  • 进行了两个脑电图 (EEG) 实验.
  • 快速隐形频率标记 (RIFT) 用于测量感官调制.
  • 分析了阿尔法功率和凝视位置,以评估VWM的空间偏差.

主要成果:

  • 阿尔法功率和凝视位置数据证实,VWM具有固有的空间组织.
  • RIFT分析显示,只有当注意力转向外部感知刺激时,感官调节才会发生.
  • 当注意力被内部引导到记住的项目时,没有检测到任何感官调制.

结论:

  • 视觉工作记忆不会自动招募外部注意力使用的感官处理机制.
  • VWM采用空间组织作为存储和选择内存项的原则.
  • 内部注意力对感官处理的影响与外部注意力不同.